Delta Air Linesenjoys a strong transatlantic showing, supported by a joint venture with Virgin Atlantic, Air France, and KLM. Between the four operators, passengers can choose over 370 flights between North America and Europe. As such, the Atlanta-based carrier has a healthy offering of flights across the Atlantic Ocean. Here is a look at the 10 busiest transatlantic routes the company offers.

Atlanta Remains Crucial To International Connectivity

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Unsurprisingly, flights departing from Delta’s hub of Hartsfield–Jackson Atlanta International Airport top the list in terms of number of flights, seats scheduled, and available seat miles (ASMs). According to data provided by Cirium, an aviation analytics company, a total of 90 flights are scheduled for April 2026. Alongside this, 25,350 seats are scheduled, providing over 111 million ASMs.

The route between Atlanta and London Heathrow matches the top spot regarding the number of flights. However, it falls slightly behind when it comes to seats scheduled (21,420) and ASMs (90.1 million). Notably, the Atlanta-Amsterdam route is operated by a mix of the airline’s Airbus A330-300s, A330-900neos, and A350-900s. However, the Atlanta-Heathrow flights are all handled by the Boeing 767-400.

In fact, Delta’s A330s dominate the majority of the busiest routes. After all, this type is the most dominant widebody in the carrier’s fleet, with over 80 units of them in its holdings.

The table below dives further into the 10 busiest routes across the Atlantic from the United States scheduled by Delta in April.

New York Also Shows Its Value As A Global Hub

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New York has long been a crucial connector to Europe and beyond for airlines based in the United States. This factor is highlighted by the fact that New York JFK holds five of the top 10 spots when it comes to the most flights across the Atlantic operated by Delta.

The airport represents 279 flights within the list. Together, these services provide 75,533 total seats and generate roughly 287.1 million ASMs. Taking the above table into account, on average, each flight departing JFK offers about 271 seats, underscoring the airport’s role as a major hub for high-capacity long-haul aircraft.

Delta’s success at JFK is not limited to international routes. Services from the East Coast hotspot to John Wayne Airport in Orange County are relaunching in May, exemplifying how transcontinental demand is also high alongside transoceanic operations.

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Consistently High Demand On Routes To Amsterdam And Paris

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Flights to Paris Charles de Gaulle Airport from JFK and ATL have 133 flights between them, allowing for over 140 million ASMs just on this route. Meanwhile, Amsterdam Schiphol has 180 flights and over 140 million ASMs from Detroit Metropolitan Wayne County Airport and Minneapolis-Saint Paul International Airport alone.

It should be noted that Italy is also a stronghold for Delta, with Milan Malpensa Airport seeing 43 flights totaling 12,126 seats and around 48.4 million ASMs, while Rome Fiumicino Airport handles 120 flights, offering 33,768 seats and generating roughly 157.2 million ASMs.

Altogether, Delta is looking to go all in on Europe heading into the summer season. It announced its largest-ever schedule. The carrier will fly to a total of 28 destinations across the continent, with Malta, Olbia, and Porto new additions in 2026. Other routes to launch in the coming months include flights between Atlanta and Tel Aviv, Seattle to Rome, Seattle to Barcelona, and Boston to Nice. Therefore, we can anticipate even higher frequencies and seats available as Delta prepares for a busy period ahead.